Irritator challengeri was a great theropod that lived at the end of the early Cretaceous 110 million years ago where today it is the Sertão do Cariri, in Ceará. He was one of the first ancestors close to the Moroccan superpredator Spinosaurus aegypticus . Paleontologists indicate that the Irritator challengeri had its brain, nostrils, teeth and long snout adapted for efficient fishing techniques. Several other spinosaurus fossils have been described in the same geological unit, the Romualdo Formation, including Angaturama limai . It is possible that these spinosaurs were individuals of the same species at different ages, but new fossils will be needed to test this hypothesis. In addition, the largest specimen of spinosaurus in the region indicates that Romualdo's spinosaurs also had dense limb bones and were adapted for swimming in shallow waters, similarly to that observed in Spinosaurus aegypticus .
Get to know the science behind the reconstruction of this doll in a live on the Bone Collectors channel here .
Irritator Size : Height: 11 cm (110 mm) | Width: 6 cm (60 mm) | Length: 37 cm (370 mm) | *
Box Size : Height: 17.5 cm (175 mm) | Width: 9.5 cm (95 mm) | Length: 38.50cm (385mm) | * Weight: 0.550 kg *
* Approximate size and weight *
*** The BASIC miniature does not have a box. ****
* All the pieces are handcrafted and there may be a slight variation in tone and details from one to the other, always respecting the differences of each model.
Irritator challengeri was a large theropod that lived in the late Early Cretaceous (~ 110 Mya) of what is now the Cariri Outback, in the Brazilian state of Ceará. It was one of the closest early relatives of the Moroccan super-predator Spinosaurus aegypticus . Paleontologists indicate that Irritator challengeri had its brain, nostrils, teeth, and long snout adapted for efficient fishing techniques. Several other spinosaurine fossils were described from the same geological unit, the Romualdo Formation, including Angaturama limai . It is possible that those spinosaurs comprised individuals of the same species of different ages, but new fossils are necessary to test this hypothesis. Furthermore, the largest spinosaurine specimen in the area indicates that the Romualdo spinosaurs also had dense limb bones adapted for swimming in shallow water, in a similar way to that observed in Spinosaurus aegypticus .
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